Oil or gasolene attachment for gas-engines.



No. 792,894. PATENTED JUNE 20, 1905. J. E. GREEN.

OIL 0R GASOLENE ATTACHMENT FOR GAS ENGINES.

APPLIGATION FILED JUNE 13.1903.

/N VEN 70H mes efa #ff ffl UNTTED STATES Patented J une 20, 1905.

PATENT OIL OR GASOLENE ATTACHMENT FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 792,894, dated J une20, 1905.

`Application filed June 13. 1903. Serial No. 161,318.

To fr/Z/ whom, it T11/(ty concern:

Be it known that l, JAMES EDWIN GREEN, a citizen of the United States,and a resident of Belmont, in the county of Pleasants and State of WestVirginia, have invented a new and 1m proved Oil or Gasolene Attachmentfor Gas-Engines, of which the following is a full, clear, and exactdescription.

The invention relates to gas-engines such as are used in oil districts;and its object is to provide a new and improved oil or gasoleneattachment for a gas-engine to allow of running the engine with gas from'an oil-well or with gasolene in case the gas-supply gives out, or incase the supply is low and not slitticient to run the engine then oil orgasolenevapor is supplied through the attachment in any desired degreeto form an explosive mixture with the gas, the arrangement being suchthat the necessary changes can be made while the engine is running.

A further object of the invention is to vaporize oil or gasoleneprevious to its entrance into the mixing-chamber to insure completecombustion and to prevent the attachment from frosting or freezing.

The invention consists of novel features and parts and combinations ofthe same, as will he more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all thefigures.

Figure 1 is a side elevation of the improvement as applied to agas-engine of the twoeycle type. Fig. Q is an enlarged side elevation ofthe improvement, parts being in section. Fig. 3 is an enlarged sectionalside elevation of the mixing-chamber and adjacent parts. Fig. L is alike view of the governorcontrolled regulating-valve. Fig. 5 is a detailplan view illustrating the governor connections, and Fig. 6 is a frontview of the same.

The improved oil or gasolene attachment is secured to the gas-engine atthe air-supply pipe A for the mixing-chamber B, into which opens theair-supply pipe and into which also opens the gas-supply pipe C, so thata mixture of air and gas is formed in the said chamber B. D is anauxiliary exhaust-pipe opening into the chamber B, as indicated in Fig.3. The mixture passes from the mixingchamber B into the cylinder E, tobe ignited therein in the usual manner to give the desired impulses tothe engine.

The attachment, as shown in detail in Fig. 2, is provided with avalve-casing F, having a valve-seat F, normally closed by a valve G, andthe said valve-casing is connected in front of the valveG with an oil orgasolene supply pipe H, leading from an overhead oil or gasolene tank,so that the oil or gasolene flows by its own gravity from the said tankinto the valve-casing F. The valve G is normally held in its vscat F bya spring I, coiled on the extension G of a valve-stem G2 and guided in abearing arranged in the rear end of a tube J', screwing in the rear endof the casing F and containing perfor-ations J, opening into anauxiliary mixing-chamber K, attached to a nipple A on the air-supplypipe A, as plainly shown in Fig. 2.

A hot-air-supply pipe Lis attached tothe chamber K and leads from a tubeL, through which extends the main exhaust-pipe D, so that air passinginto the said tube L is heated and sucked in this condition by way ofthe pipe L into the auxiliary mixing-chamber K to mix with the vaporizedoil or gasolene issuing through the perforations J in the tube J. Nowthe hot air passing into this mixingchamber K heats the tube J, andconsequently the oil or gasolene periodically discharged through thevalve-seat F into the tube J is vaporized, and the vaporized oil orgasolene mixes with the hot air, and the mixture is drawn through theair-supply pipe A into the mixing-chamber B to mix with the gas passinginto the same to form a highly-explosive mixture, sucked into thecylinder E in the usual manner, to be finally ignited therein.

The engine to which the attachment is shown applied only explodes thecharge at every other revolution, one revolution being employed to cleanthe cylinder and draw in a fresh charge, the charge then beingcompressed and exploded.

IOO

It is to be understood that the suction produced on the forward strokeof the engine opens the lower auxiliary valve 7) and draws in thecharge, which passes from pipe A up under the open valve 722 and thencethrough the port which communicates through ports b4 with the casing ofthe main valve Q". The main valve Qtl is open at this time, and thecharge passes up under the. valve and through the port into theexplosion-chamber. When the engine is at the extreme end of stroke, themain valve closes and conlines the charge in the cylinder orexplosion-chamber. After the explosion takes place the regular exhaustpasses out through the main exhaust-pipe D'. As soon as the explosiontakes place the main valve Q* is raised. The engine-piston on the returnstroke drives out the hot air or burned gases remaining in the maincylinder or explosion-chamber, the gases passing out through the portthence down under the main valve, vand out through ports 1. The portsZ1* connect, as previously described, with port 7) of the chamber B andthe burned gases pass through the port lifting the upper auxiliary valve3, and thence pass into the auxiliary exhaust-jupe D, which conducts thefumes outside the building.

The forward end of the valve-stem G2 cxtends through astufiing-box Fheldon the forward end of the valve-casing F, and on the outer end of thevalve-stein G2 is held an adjustable collar G3, abutting against a pinG, inserted in one of a series of apertures Gr, formed on the valve-stemG2. A spring' presses with one end against the said collar Gr3 to assistthe spring l in holding the valve G normally in a closed position on itsvalveseat F. The terminal of the outer end of the valve-stem G2 isadapted to be engaged by a screw-rod N, screwing in a lever O,fulcruined at O on a bracket O2, attached to the valvecasing F, and thesaid screw-rod N after being adjusted is securely locked in place on thelever O by a locking-nut N.

rlhe free end of the lever() is pivotally connected by a link P with aslide Q', forming a movable part of a governor Q, driven from the mainshaft R of the engine. A second slide Q5 is located at the front end ofQ and is provided with a wheel at its end. A spring (not shown) presseson the slide Q5 and holds the wheel in engagement with an eccentricdriven from the engine, so that when the engine is in motion the movablepart Q and link P impart a swinging motion to the lever O, so that thescrew-rod N imparts a sliding motion to the valve-stem (Jr2 to move thevalve G olf its seat to allow the oil or gasolene to pass to the openvalve-seat F in to the vaporiZing-tube J. On the return stroke of themovable part Q the springs I and G immediately return the valve G to itsseat F to disconnect the oil or gasolene supply from the vaporiZing-tubeJ. The movable part Q of the governor Q is connected by a link Q2 with abell-crank lever Q3, controlling the admission-valve Qi of the engine,(see Fig. 4,) so as to regulate the amount of the explosive mixturepassing into the cylinder E to run the engine at a uniform speed.

The body portions of the slides Q Q5 are spaced apart at their adjacentends; but the slide Q has a hinged front portion q projecting beyond theend of the body and adapted when in normal position to be engaged by theslide Q5 when the latter' is moved by the eccentric. The hinged ormovable part q of the slide Q' is normally held i'n position to beengaged by the slide Q5 by a spring q'. A pin q2 extends through a slotformed in the body portion of the slide Q and engages the hinged part q,the slot in the slide being elongated to permit of the forward andbackward movement of the slide. A pivoted lever ff' bears at one endagainst the outer end of the pin q2, the other end of the lever beingarranged to be moved by the governor. When the speed of the engineincreases beyond the normal, the upper end of the lever/ris movedoutward, and the pin q2, engaged by theother end of the lever, is movedinward, forcing the hinged part q of the slide out of normal position,so that the slide Q is not acted on by the slide Q5, driven from theeccentric. Vhen the speed of the engine again reaches the normal, thelever fr is returned to normal position by the spring on the governor'and the spring q returns the hinged part q to operative position.

The main or admission valve Q'l is situated between the auxiliary valveb3 and the enginecylinder and is directly back of the chamber B,containing' the said auxiliary valve. This valve Q" serves to separatethe explosionchamber from the auxiliary valve b3 and to retain thecharge in the cylinder. When the slide Q and link Q2 are out ofoperative position, the valve Q'l is closed by its spring, and thesuction produced bythe stroke of the engine cannot then open the valveb3.

The slide Q being connected with the admission-valve Q", the movement ofsaid valve is controlled by the governor to regulate the amount ofexplosive mixture passing to the cylinder to run the engine at a uniformspeed when the gas-supply only is employed, as well as when the oil orgasolene attachment is in use.

Now from the foregoing it will be seen that the engine can be run in theusual manner with gas as the motive agent; but in case the gas is not insuiiicient quantity to properly run the engine then use is made of theoil or gasolene attachmentthat is, the valve H in the oil or gasolenesupply pipe H is opened to allow oil or gasolene to iiow to thevalvecasing F. Now as the valve G is periodically opened a desiredamount of oil or gasolene is allowed to flow into the vaporiZing-tube Jfor TOO the oil or gasolene to be vaporized and mixed l ize the oil orgasolene and form a mixture with .the hot air drawn in through the pipeL, the mixture then passing into the mixingchamber B to mix with the gaspassing through the pipe Cinto the said chamber. Now bythe operatoradjusting the screw-rod N in the lever O the valve G may be openedmoreor less, so that alarger or lesser amount of oil or gasolene is allowedto fiow into the vaporiZing-tube J, according to the amount required forrunning the engine properly-- that is, if the gas-supply is very lowthen the valve G is moved open more fully, and when the gas-suppl yincreases the valve G is opened but an instant to admit less oil orgasolene to the tube J'. Now in ease the gas-supply gives out entirelythen the screw-rod N is adjusted correspondingly to admit a largequantity of oil or gasolene to the engine, so as to run the latter byoil or gasolene only.

It is to be understood from the above description that when theattachment is in use and thc engine is running at normal speed the valveis opened by the forward movement of the slide Q' to allow the oil tofiow into the vaporiZing-tube and is closed by the action of the springsl and Gr on the return movement of the slide Q. When the speed of theengine under the action of the attachment increases beyond the normal,the slide Q' is then not acted upon to open the valve G, said valveremaining closed until the speed of the engine again reaches the normal.

The valve Gr of the attachment when the latter is in use and theadmission-valve being actuated from the slide Q are opened and closed atthe same time, and consequently when the hinged part q of the slide Q/is thrown out of operative position by the governor the admission-valveQ" and the valve G of the attachment are held closed by the action oftheir springs and the supply of the explosive mixture to the engine isshut off.

Having thus described my invention, l claim as new and desire to secureby Letters Paten t4 1. An attachment for an engine normally using gas asa fuel, the said attachment comprising a valve-controlled oil orgasolene supply opening into the mixing-chamber of the engine, wherebyadditional fuel-may be supplied to the engine when the gas-supplybecomes deficient, and means governed by the speed of the engine forintermittently opening the said valve, as set forth.

2. An attachment for gas-engines normally usingI gas as a fuel, the saidattachment comprising a valve-controlled oil or gasolene supply, openinginto the mixing-chamber of the engine, whereby additional fuel may besupplied to the engine, when the gas-supply becomes delicient, meansgoverned by the speed of the engine for intermittently opening the saidvalve, and a hot-air supply connected with the said oil or gasolenesupply, to vaporwith the same, as set forth.

3. An attachment for gas-engines normally using gas as a fuel, the saidattachment comprising a valve-controlled oil or gasolene su pply,opening' into the mixing-chamber of the engine, means governed by thespeed of the engine for intermittently opening the said valve, andmanually-controlled means for regulating the throw of the said valve toadmit more or less oilor gasolene according to the amount of gas-supply,as set forth.

4. An attaeh ment for gas-engines normally using gas as a fuel, the saidattachment comprising an auxiliary mixing-chamber connected with themain mixing-chamber of the engine, an oil or gasolene supply openingintothe said auxiliary mixing-chamber, a hot-air pipe connected with thesaid auxiliary mixing-chamber to vaporize the oil or gasolene and forman additional fuel for the engine when the gas -supply becomesdeficient, a valve controlling said oil or gasolene supply, and meansgoverned by thc speed of the engine for intermittently opening saidvalve, as set forth.

5. An attachment for a gas-engine normally using gas as a fuel, the saidattachment comprising an auxiliary mixing-chamber, )rovided with avalve-seat, an oil or gasolene supply pipe opening' into the saidvalve-casing, a valve normally seated on the said valveseat, means forperiodically opening the said valve and governed by the speed of theengine and a perforated vaporizing-tube extending into the saidauxiliary mixing-chamber and connected with the said valve-casing, thesaid auxiliary mixing-chamber being connected with the engine wherebyadditional fuel may be supplied to the engine when the gas-supplybecomes deficient, as set forth.

6. An attachment for a gas-engine normally vusing gas as a fuel, thesaid attachment comprising an auxiliary mixing-chamber, provided with avalve-seat, an oil or gasolene supply pipe, opening into the saidvalve-casing, a valve normally seated on the said valve-seat and adaptedto be periodically opened, a perforated valviorizing-tube extending intothe said mixing-chamber and connected with the valve-casing, a levermounted to swing means actuated from the engine, for moving said leverperiodically, the said means being governed by the speed of the engine,and a screwrod held in the said lever and adapted to engage thevalve-stem of the said valve to move the latter into an open position toallow the oil or gasolene to flow into the said Vaporizing-tube, thesaid auxiliary mixing-chamber being connected with the engine wherebyadditional fuel may be supplied to the engine when the gas-supplybecomes deficient, the said screw-rod being adjustable in the said leverto regulate the throw of the said valve to IOO ITO

admit more or less oil or gasolene according to the amount ofgas-supply, as set forth.

7 The combination with the air supply pipe for the mixing-chamber of agas-engine y normally using gas as a fuel, of an oil or gasoleneattachment for supplying additional fuel to the engine when thegas-supply becomes deficient, the said attachment comprising anauxiliary mixing-chamber connected with said air-supply pipe,avalve-casing connected with said auxiliary chamber and provided with avalve-seat, an oil or gasolene supply pipe connoected with thevalve-casing, a perforated vaporizing -tube connected with thevalvecasing and extending into the auxiliary mixing-chamber, a valvenormally seated on the valve-seat and periodically opened to permit theoil or gasolene to How into the Vaporizing-tube, a hot-air pipeconnected with the auxiliary mixing-chamber, means for normally holdingthe valve to its seat, means actuated from the engine for periodicallyopening said valve, the said means being governed by the speed of theengine, and means for regulating the throw of said valve to admit moreor less oil or gasolene according to the amount of gas-supply, as setforth.

8. rI`he combination with a gas-engine normally using gas as a fuel andhaving a mixing'- chamber into which opens the gas-supply pipe and theair-supply pipe, of an attachment for supplyingadditional fuel to theengine when the gas-supply becomes deficient, the said attachmentcomprising an auxiliary mixingchamber connected with the air-supply pipeleading to the mixing-chamber of the engine, a valve-controlled oil orgasolene supply, leading to the auxiliary mixing-chamber, a hotairsupply opening into the auxiliary mixingchamber to vaporize the oil orgasolene and form a mixture with the same, the mixture being drawn intothe mixing-chamber of the engine to mix with the gas passing into thesame, means for intermittently opening the said valve to admit the oilto said auxiliary mixing-chamber, the said means being actuated from theengine during the normal running of the same, a governor, and aconnection between the governor and said means, whereby the latter ismoved out of operative position when the speed of the engine increasesbe- JAMES EDWIN GREEN.

Witnesses:

T. N. Boss, GEO. W. Boss.

